Metallic packing.



' BEST/AVAILABLE COP* -N .sol 959. PATBNTED ocT. 17. 1905. o J. BADBKBR. METALLIC PACKING.

APPLICATION FILED JULY 30, 1903. RENEWED MAB.. 20, 1905.

Hozmmp UNITED STATES PATENT oEEToE.I

JOHN BADEKER, OF OMAHA, NEBRASKA, ASSIGNOR TO BADEKER METAL- LIC PACKING COMPANY, OF OMAHA, NEBRASKA, A CORPORATION.

METALLIC PACKING.

Specication of Letters Patent.

Patented Oct. 17, 1905.

Application filed July 30, 1903. Renewed March 20,'1905. Serial No. 251,006.

Tn all, whom, 1125 may concern:

Be it known that I, JOHN BADEKER, acitizen of the United States, and a resident of Omaha, in the county of Douglas and State of Nebraska, have invented a new and Improved Metallic Packing, of which the following is a full, clear, and exact description.

This invention relates particularly to a packing for the piston-rod of locomotives,although it may be used upon other rods, as will be apparent.

The principal object of the invention is to providea packing in which the strength of the packing-segments will be brought as high as possible and in which should any of thesegments break the segments will nevertheless be held in their proper position with respect to the rod,so that the breaking of the segments will not result in the absolute destruction of Lhe packing. I

To this end the invention consists in certain pecial features of construction,as willfully be vllescribed hereinafter, and pointed out in the `calms.

This specification is a speci lic description of i)ne example of my invention, while the claims bre definitions ot' the exactscope of the in- 'ention.

Reference is to be had to the accompanying rawings, forming a part of this specification, n which similar characters of reference indi'- ate corresponding parts in all the figures. Figure 1 is a longitudinal section of the Jufling-box and rod, showing my invention pplied thereto. Fig. 2 is an inner end eleation of the segments and cup. Fig. 3 is a de elevation of the sections. Fig. 4: is an |ner view of the cup with the segments reoved, and Fig. 5 is an outer end view of one i' the segments.

a indicates the cylinder-head, I) the stuiiingx, c the cap or gland, and Z the piston-rod, l of which may be of the usual or any dered construction. Located in the outer end the box b is a cup e, which has acylindrical iter side and a tapering or conical interior the small diameter of which runs into a cy- |drical interior portion e2, fitting snugly to e rod d. From the outer side of the cup e iange or collar e3 projects, this collar lying the opening c of the cap or gland c. The l tapering or conical interior e' of the cup L.ses from the rod d inward toward the cylto match the tapered interior e of the cup e.

Each segmentf is formed at its middle with a radial protuberance j" on its outer side, these protuberances f' fitting snugly within the respective depressions e* in the cup c.

Said protuberances f' serve the double purpose of strengthening the sections f and of matching with the cavities e* to prevent the segments in the cone from turning within the cup. In metallic packings the chief danger lies in the cracking or breaking of the segments' of the packing metal, and the greatest strain on these segments obviously is necessarily at the middle portions thereof. The protuberances f' therefore provide an extra mass of metal at the point of the segments where the greatest strain is endured. It is also essential to the eiiiciency and durability of t e packing that the segments be kept from turni gwithin the cup, and this is attained by the.4 inner engagement between the protuberances f and the walls of the cavities e4. The ends ot' the segments f are formed with matching reduced portions f2, which overlap, as shown best in Fig. 3. This construction enables the segments to contract aroundthe rod as they wear down through the use of the packing, but prevents the leakage of steam past the segments, since it will be observed that said reduced portions fzlie closely against each other on their transverse faces, and thus effect a steam-tight connection. When the packing is first applied, a certain clearance is left between the ends of the segments, as shown Vin Figs. 2 and 3, these clearances permitting the packing-cone to close or contract around the rod as the metal wears away. 1n connection with this feature of the invention it will be observed that the cavities c* of the cup e are placed equidistant in the cup, and

IOO

being engaged by the protuberances f of the segments f keepthe segments always in the same relative position on the rod and prevent two segments from being forced up tightly against the middle segments, so as to close the clearance-spaces between the segments at two points and to leave an abnormal clearance-space at the third juncture between the segments, through which abnormal clearancesteann would be liable to leak. This relative dislocation of the packing-segments is a common fault with metallic packings heretofore devised, and by means of the improved construction which I have provided the sections maintain at all times their proper relative position-that is to say, thereis an equal degree of clearance between-each section--and the life of thepacking is kept unimpaired until it has been worn suiciently to take up the ,entire clearance between the segmentsthat is to say` until the end-of the segments are bound tirmly together.

g indicates a collar which encircles therodl d and bears against the inner or larger end-of the packingcone, andV L indicates an rexpansive spring acting between the cylinder-head a and the collar g and serving to hold all of the,L parts of the packing tight yet yieldingly engaged. As fast as the packing-segments wear away they are forced by the spring L into the cup e. The tapering walls of the cup cause the segments to be contracted varound the rod and hold them firmly thereon. 'This packing provides an absolutely steam-tight connection, and for the reasons hereinbefore explained its structure is such as reduces the `liability of fracture on any of its parts to a minimum, and even should the fracture occur 1 fthe parts will be held nevertheless in their fproper positions and will perform their intended functions almostas effectively as when the packing is in its normal position.

Various changes in the form. proportions,

and details of the invention. may be resorted to at will without departing from the spirit claims. v

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A metallic rod-packing, comprisinga cup adapted to'encircle the rod having a tapering interior, a sectional cone correspondingly tapered and fitted within thecup, the cone encircling the rod for the purpose specified, and vmeans for yieldingly holding the cone in place, the sections of 4thecone and the cup having interengaged'surfaces to prevent the movement of the cone-sections within the cup and the'cone-sections having overlapped ends with clearance-spaces between them to permit the contraction of then cone around the rod.

2. A metallic rod-packing segment, having a cylindrical inner surface adapted to engage the rod, and al uniformly tapered curved outer surface concentric to the inner surface, said segment having vat a point intermediate its ends an outwardly projecting protu berance extending longitudinally ofthe rod, for the double purpose specified.

. 3. A'metallic rod-packing,comprisingacup with a tapered interior surface and also having longitudinally-extending grooves in its inner surface, anda sectional cone fitting in the-cup and encirclingl the rod, the segments of said cone having curved, tapered outersurfaces concentric to the rod and fitting snugly against the interiorsurfaces of the cup, saidl segments also having on their outer surface intermediate their ends, longitudinally-ex tending protuberances fitting in the respee tive-depressions in the cup, for the double .purpose specified.

In testimony whereof I have signed my narm to this specih'catiorin the presence of two sub1 scribing witnesses. i

JOHN ADEKER. Witnesses: HOWARD J. COWGILL, y

D. O. BARNELL.

and scope of my invention as defined inthe, 

